WO2014180373A1 - Procédé et système d'émission avec dérivation de paquets de données, et support de stockage informatique - Google Patents

Procédé et système d'émission avec dérivation de paquets de données, et support de stockage informatique Download PDF

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Publication number
WO2014180373A1
WO2014180373A1 PCT/CN2014/077805 CN2014077805W WO2014180373A1 WO 2014180373 A1 WO2014180373 A1 WO 2014180373A1 CN 2014077805 W CN2014077805 W CN 2014077805W WO 2014180373 A1 WO2014180373 A1 WO 2014180373A1
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Prior art keywords
rlc
data stream
entity
layer
rlc pdu
Prior art date
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PCT/CN2014/077805
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English (en)
Chinese (zh)
Inventor
王昕�
和峰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP14794263.5A priority Critical patent/EP3059997A4/fr
Priority to JP2016523208A priority patent/JP6328756B2/ja
Priority to US15/029,942 priority patent/US20160373962A1/en
Publication of WO2014180373A1 publication Critical patent/WO2014180373A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/082—Load balancing or load distribution among bearers or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/30—Peripheral units, e.g. input or output ports
    • H04L49/3009—Header conversion, routing tables or routing tags
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0226—Traffic management, e.g. flow control or congestion control based on location or mobility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a method, system and computer storage medium for packet offload transmission. Background technique
  • LTE Long Term Evolution
  • LTE-A enhanced LTE
  • LTE-Advanced LTE-Advanced
  • LPNs low power nodes
  • E-UTR AN Evolved-Universal mobile telecommunications system Terrestrial Radio Access Network
  • E-UTR AN Evolved-Universal mobile telecommunications system Terrestrial Radio Access Network
  • MME mobility management entity
  • CN Core Network
  • S1-MME interface S1-MME interface
  • CN Core Network
  • Bu Xi nodes other MeNB the UE additional radio resource, called the secondary base station (SeNB, secondary eNB) 0 MeNB
  • SeNB between the MeNB and the UE are built wireless Uu
  • a specific user plane data transmission architecture can be as shown in FIG. 2.
  • the transmission of EPS bearer #1 (EPS bearer#1) is the same as the prior art, and is sent by the S-GW to the MeNB through the S1-U interface, and then sent by the MeNB to the UE through the wireless Uu interface;
  • the data transmission of bearer #2 (EPS bearer#2), after being sent by the S-GW to the MeNB through the S1-U interface, the MeNB may send part of the data packet to the UE through the Uu interface, and the other part transmits to the UE through the Xn interface.
  • the SeNB is further sent by the SeNB to the UE through the Uu interface. In this way, the data packets of the same EPS bearer are transmitted by the radio resources of the two base stations, which greatly improves the throughput of the bearers and satisfies the data rate requirements of the UE.
  • the UE mobile performance is not stable.
  • the SeNB cell accessed by the UE changes, the data interruption time and the loss caused by the SeNB serving cell change cannot be reduced.
  • the impact of the packet on the network side and the terminal node caused by the change of the SeNB cell cannot be reduced. Summary of the invention
  • the present invention is directed to a method, system, and computing and storage medium for packet offloading, which can meet the demand for large data volume of the UE while taking into account the service requirements of the UE with high mobility.
  • the technical solution of the embodiment of the present invention is implemented as follows:
  • the first aspect of the embodiments of the present invention provides a method for data packet offload transmission, where the method is applied to a radio link control (RLC) layer.
  • the RLC layer includes a primary-radio link control (M-RLC) layer and a secondary-radio link control (S-LC) layer, and the method includes:
  • the M-RLC layer will be a packet data convergence protocol (PDCP, Packet Data Convergence).
  • PDCP Packet Data Convergence
  • the RLC Service Data Unit (RCC Service Data Unit) sent by the protocol layer is converted into a first RLC Packet Data Unit (RTC PDU) data stream and a second RLC PDU data stream;
  • RLC PDU RLC Packet Data Unit
  • the S-RLC layer sends the second RLC PDU data stream to a second MAC layer; the first MAC layer sends the first RLC PDU data stream to a receiving end; The second RLC PDU data stream is sent to the receiving end.
  • the M-RLC layer converts the RLC SDU data stream sent by the PDCP layer into the first RLC PDU data stream and the second RLC PDU data stream, including:
  • the RLC SDU adds a PDU header, and encapsulates the first RLC SDU data stream into the first RLC PDU data stream;
  • the second indication information sent by the S-RLC layer or the preset prediction of the M-RLC layer And performing a corresponding segmentation and/or concatenation process on each RLC SDU in the second RLC SDU data stream, and adding a PDU packet header to the RLC SDU after segmentation and/or concatenation processing, and the second The RLC SDU data stream is encapsulated into the second RLC PDU data stream.
  • the method further includes: the M-RLC layer retransmitting the data packet that the receiving end receives the failure according to the status report fed back by the receiving end.
  • the sending, by the S-RLC layer, the second RLC PDU data stream to the second MAC layer includes:
  • a second aspect of the embodiments of the present invention provides a method for data packet offloading, where the method is applied to an RLC layer, where the RLC layer includes an M-RLC layer and an S-RLC layer, and the method includes:
  • the RLC SDU data stream is sent to the PDCP layer, and the status report is fed back to the M-RLC layer of the transmitting end.
  • the method further includes:
  • a third aspect of the embodiments of the present invention provides a system for packet offloading, where the system includes:
  • a PDCP entity an M-RLC entity, an S-RLC entity, a first MAC entity, and a second MAC entity;
  • the PDCP entity is configured to send an RLC SDU data stream to the M-RLC entity, where the M-RLC entity is configured to convert the RLC SDU data stream sent by the PDCP layer into a first RLC PDU data stream and a second RLC a PDU data stream; transmitting the first RLC PDU data stream to the first MAC entity, and transmitting the second RLC PDU data stream to the S-RLC entity;
  • the S-RLC entity is configured to receive the second RLC PDU data stream sent by the M-RLC entity, and send the second RLC PDU data stream to the second MAC entity;
  • a MAC entity configured to receive the first RLC PDU data stream sent by the M-RLC entity, and send the first RLC PDU data stream to a receiving end;
  • the second MAC entity is configured to receive the second RLC PDU data stream sent by the S-RLC entity, and send the second RLC PDU data stream to the receiving end.
  • the receiving unit is configured to: Receiving an RLC SDU data stream sent by the PDCP entity; the splitting unit is configured to divide the RLC SDU data stream into a first RLC SDU data stream and a second RLC SDU data stream;
  • the first size pre-processing unit is configured to perform corresponding segmentation and/or concatenation processing on each RLC SDU in the first RLC SDU data stream according to the first indication information sent by the first MAC entity;
  • the first encapsulating unit is configured to add a PDU header to the RLC SDU after the first size pre-processing unit is divided and/or concatenated, and encapsulate the first RLC SDU data stream into the first An RLC PDU data stream;
  • the second size pre-processing unit is configured to perform, according to the second indication information sent by the S-RLC entity or the preset prediction value of the M-RLC entity, each RLC SDU in the second RLC SDU data stream. Perform corresponding segmentation and/or cascading processing;
  • the second encapsulating unit is configured to add a PDU header according to the RLC SDU that is divided and/or concatenated by the second size pre-processing unit, and encapsulate the second RLC SDU data stream into the first Two RLC PDU data streams.
  • the M-RLC entity further includes: a receiving state, an advertising unit, and a retransmission unit;
  • the receiving status reporting unit is configured to receive a status report that is fed back by the receiving end, and the retransmission unit is configured to retransmit the data packet that is received by the receiving end according to the status report.
  • the S-RLC entity includes: a third size pre-processing unit and a third encapsulation unit; wherein
  • the third size pre-processing unit is configured to perform corresponding segmentation and/or concatenation processing on each RLC PDU in the second RLC PDU data stream according to the indication information sent by the second MAC entity;
  • the third encapsulating unit is configured to add/modify a PDU header to the RLC PDU that is divided and/or cascaded by the third size pre-processing unit and send the PDU header to the second MAC layer.
  • a fourth aspect of the embodiments of the present invention provides a system for packet offloading, where the system includes a PDCP entity, an M-RLC entity, an S-RLC entity, a first MAC entity, and a second MAC entity;
  • the first MAC entity is configured to send a first RLC PDU data stream to the M-RLC entity;
  • the second MAC entity is configured to send the second RLC PDU data stream to the S-RLC entity;
  • the S-RLC entity is configured to receive a second RLC PDU data stream sent by the second MAC entity, and send the second RLC PDU data stream to the M-RLC entity;
  • the M-RLC entity Configuring to receive the first RLC PDU data stream sent by the first MAC entity and the second RLC PDU data stream sent by the S-RLC entity, respectively, according to the first RLC PDU data stream and the Sorting, by the SN number of each RLC PDU in the second RLC PDU data stream, the RLC PDU; removing the PDU header from the sorted RLC PDU, and using the first RLC PDU data stream and the second RLC Reassembling the PDU data stream into an RLC SDU data stream; and transmitting the RLC SDU data stream to the PDCP entity, and feeding back a status report to the M-RLC entity at the sending end;
  • the PDCP entity is configured to receive the RLC SDU data stream sent by the M-RLC entity.
  • the S-RLC entity is further configured to receive a second RLC PDU data stream sent by the second MAC entity, and separately remove/correct the PDU header, sort and recombine the second RLC PDU data stream, And sent to the M-RLC entity.
  • a fifth aspect of the embodiments of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, where the computer executable instructions are used to execute any technical solution of the first aspect of the embodiments of the present invention. The method described.
  • a sixth aspect of the embodiments of the present invention provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method according to any one of the second aspects of the embodiments of the present invention. .
  • the technical solution of the embodiment of the present invention is applied to an RLC layer, where the RLC layer includes an M-RLC layer and an S-RLC layer, and the RLC SDU data stream sent by the PDCP layer is converted into the first RLC PDU data by using the M-RLC layer.
  • the MAC layer transmits the first RLC PDU data stream and the second RLC PDU data stream to the receiving end by using the first MAC layer and the second MAC layer, respectively.
  • the network can provide fast and efficient multi-stream joint data transmission for the UE, and on the other hand, because the protocol level of the splitting occurs is low, the SeNB that undertakes the offload data transmission needs to be reconstructed when the change occurs. The forwarding of data packets is avoided, and the service rate and mobility requirements of the UE are satisfied.
  • Figure 1 is a schematic diagram of a heterogeneous network deployment
  • FIG. 2 is a schematic diagram of transmission principle of a load sharing stage
  • FIG. 3 is a schematic flowchart of an implementation process of a packet offload transmission method according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic flowchart of an implementation process of a packet offload transmission method according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a system for packet offload transmission according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic structural diagram of an M-RLC entity according to Embodiment 1 of the present invention
  • FIG. 7 is a schematic structural diagram of an S-RLC entity according to Embodiment 1 of the present invention
  • FIG. 8 is a second embodiment of the present invention
  • FIG. 9 is a schematic diagram of a data transmission/retransmission process according to Embodiment 3 of the present invention. detailed description
  • the embodiment of the present invention provides a method for data packet offload transmission. As shown in FIG. 3, the method in this embodiment of the present invention is applied to an RLC layer, where the RLC layer includes an M-RLC layer and an S-RLC layer. The method can be applied to an acknowledgment mode (AM), and an unacknowledged mode (UM). In a preferred embodiment of the present invention, the method includes the following steps:
  • Step 301 The M-RLC layer converts the RLC SDU data stream sent by the PDCP layer into a first RLC PDU data stream and a second RLC PDU data stream.
  • the RLC SDU data stream sent by the PDCP layer is received by the M-RLC layer, and the RLC SDU data stream is divided into a first RLC SDU data stream and a second RLC SDU data.
  • the RLC SDU adds a PDU header, and encapsulates the first RLC SDU data stream into the first RLC PDU data stream;
  • the PDCP layer, the M-RLC layer, the S-RLC layer, the first MAC layer, and the second MAC layer respectively correspond to different protocol layers, where the PDCP layer is the M-RLC layer and the S- The upper protocol layer of the RLC layer, the M-RLC layer is an upper protocol layer of the first MAC, and the S-RLC layer is an upper protocol layer of the second MAC layer.
  • the first indication information and the second indication information may be semi-statically configured, rough estimated values.
  • the method further includes: the M-RLC layer according to the status fed back by the receiving end The report retransmits the data packet that the receiving end receives failed.
  • Step 302 Send the first RLC PDU data stream to a first MAC layer, and send the second RLC PDU data stream to the S-RLC layer, and use the S-RLC layer to The two RLC PDU data streams are sent to the second MAC layer.
  • the sending, by the S-RLC layer, the second RLC PDU data stream to the second MAC layer includes:
  • Step 303 The first MAC layer and the second MAC layer respectively send the first RLC PDU data stream and the second RLC PDU data stream to the receiving end; specifically, the first MAC layer will be the first An RLC PDU data stream is sent to the receiving end; the second MAC layer sends the second PDU data stream to the receiving end.
  • the layer may be located in the MeNB.
  • the S-RLC layer and the second MAC layer may also be located in the SeNB, so that the downlink data stream is offloaded in the MeNB, and the downlink data is sent to the UE through the MeNB and the SeNB.
  • the layer, the S-RLC layer and the second MAC layer can be located at the UE at the same time, so that the uplink data is offloaded in the UE, and the two uplink data are separately sent to the MeNB and the SeNB.
  • the embodiment of the present invention further provides a method for data packet offload transmission.
  • the method in the embodiment of the present invention is applied to an RLC layer, where the RLC layer includes an M-RLC layer and an S-RLC layer.
  • the method can be applied to an AM.
  • the method comprises the following steps:
  • Step 401 Receive, by using the M-RLC layer, a first RLC sent by the first MAC layer. a PDU data stream and a second RLC PDU data stream sent by the S-RLC layer.
  • the S-RLC layer receives the second RLC PDU data stream sent by the second MAC layer, and separately removes/corrects the PDU header, sorts and recombines the second RLC PDU data stream, and sends the data to the M-RLC layer.
  • Step 402 Sort the RLC PDU according to the first RLC PDU data stream and the sequence number (SN, Serial Number) of each RLC PDU in the second RLC PDU data stream.
  • Step 403 Remove the PDU header from the sorted RLC PDU, and reassemble the first RLC PDU data stream and the second RLC PDU data stream that are removed from the PDU header into an RLC SDU data stream.
  • Step 404 Send the RLC SDU data stream to the PDCP layer, and feed back the status report to the M-RLC layer of the sending end.
  • the layer may be located in the MeNB, and correspondingly, the S-LC layer and the second MAC layer may be located in the SeNB, so that the uplink data stream is recombined in the MeNB.
  • the layer, the S-RLC layer and the second MAC layer can be located at the UE at the same time, so that the downlink data is reassembled in the UE.
  • the embodiment of the present invention further provides a system for packet offload transmission.
  • the system includes: a PDCP entity 51, an M-LC entity 52, an S-LC entity 53, a first MAC entity 54, and a second MAC entity 55;
  • the PDCP entity 51 is configured to send an RLC SDU data stream to the M-RLC entity.
  • the M-RLC entity 52 is configured to convert the RLC SDU data stream sent by the PDCP layer into a first RLC PDU data stream and a second RLC PDU data stream; and the first RLC PDU Transmitting a data stream to the first MAC entity 54, and transmitting the second RLC PDU data stream to the S-RLC entity 53;
  • the S-RLC entity 53 configured to receive the second RLC PDU data stream sent by the M-RLC entity 52, and send the second RLC PDU data stream to the second MAC entity 55;
  • the first MAC entity 54 is configured to receive the first RLC PDU data stream sent by the M-RLC entity 52, and send the first RLC PDU data stream to a receiving end; the second MAC entity 55. Configure to receive the second RLC PDU data stream sent by the S-RLC entity 53, and send the second RLC PDU data stream to the receiving end.
  • the M-RLC entity 52 includes: a receiving unit 521, a shunting unit 522, a first size pre-processing unit 523, a first encapsulating unit 524, a second size pre-processing unit 525, and a second Packaging unit 526; wherein
  • the receiving unit 521 is configured to receive an RLC SDU data stream sent by the PDCP entity 51.
  • the offloading unit 522 is configured to divide the RLC SDU data stream into a first RLC SDU data stream and a second RLC SDU data stream;
  • the first size pre-processing unit 523 is configured to perform corresponding segmentation and/or concatenation processing on each RLC SDU in the first RLC SDU data stream according to the first indication information sent by the first MAC entity 54;
  • the first encapsulating unit 524 is configured to add a PDU header to the RLC SDU that is divided and/or concatenated by the first size pre-processing unit 523, and encapsulate the first RLC SDU data stream into a Describe the first RLC PDU data stream;
  • the second size pre-processing unit 525 is configured to perform, according to the second indication information sent by the S-RLC entity 53 or the preset value preset by the M-RLC entity 52, in the second RLC SDU data stream. Each RLC SDU performs corresponding segmentation and/or cascading processing;
  • the second encapsulating unit 526 is configured to add the PDU header according to the RLC SDU divided and/or concatenated by the second size pre-processing unit 525, and encapsulate the second RLC SDU data stream into The second RLC PDU data stream.
  • the M-RLC entity 52 further includes: a receiving status reporting unit 527 and a retransmission unit 528;
  • the receiving status reporting unit 527 is configured to receive a status report that is received by the receiving end.
  • the retransmission unit 528 is configured to retransmit the data packet that the receiving end fails to receive according to the status report.
  • the S-RLC entity 53 includes: a third size pre-processing unit 531 and a third encapsulation unit 532;
  • the third size pre-processing unit 531 is configured to perform corresponding segmentation and/or concatenation processing on each RLC PDU in the second RLC PDU data stream according to the indication information sent by the second MAC entity 55.
  • the third encapsulating unit 532 is configured to add/modify a PDU header to the RLC PDU that is divided and/or concatenated by the third size pre-processing unit 531 and sent to the second MAC layer.
  • the embodiment of the present invention further describes a system for packet offload transmission.
  • the system includes a PDCP entity 51, an M-LC entity 52, an S-LC entity 53, a first MAC entity 54, and a second MAC. Entity 55; wherein
  • the first MAC entity 54 is configured to send a first RLC PDU data stream to the M-LC entity 52;
  • the second MAC entity 55 is configured to send the second RLC PDU data stream to the S-RLC entity 53;
  • the S-RLC entity 53 configured to receive the second RLC PDU data stream sent by the second MAC entity 55, and send the second RLC PDU data stream to the M-RLC entity 52;
  • the M-RLC entity 52 is configured to receive the first RLC PDU data stream sent by the first MAC entity 54 and the second RLC PDU data stream sent by the S-RLC entity 53 respectively; Sorting, by the first RLC PDU data stream and the SN number of each RLC PDU in the second RLC PDU data stream, the RLC PDU; removing the PDU header from the sorted RLC PDU, and using the first RLC Reconstructing the PDU data stream and the second RLC PDU data stream into an RLC SDU data stream; sending the RLC SDU data stream to the PDCP entity 51, and feeding back a status report to the M-RLC entity at the transmitting end;
  • the PDCP entity 51 is configured to receive the RLC SDU data stream sent by the M-RLC entity 52.
  • the S-RLC entity 53 is further configured to receive a second RLC PDU data stream sent by the second MAC entity 55, and separately remove/correct the PDU header, sorting, and the second RLC PDU data stream. Reorganized and sent to the M-RLC entity 52.
  • FIG. 9 is a schematic diagram of a data transmission/retransmission process according to Embodiment 3 of the present invention.
  • the M-RLC at the receiving end periodically returns a status report according to the configuration of the control plane, where the status report is The SN number is based on the header information allocated by the sender M-RLC.
  • the transmitting end M-LC After receiving the status report, the transmitting end M-LC retransmits the data packet indicated as failed, but the transmitting end M-RLC can still choose whether to send the retransmitted data packet to the peer end or the S-RLC.
  • the M-LC may consider removing/modifying the transmission of the offloaded link. Lose.
  • the following example is used to perform the offloading and transmitting data of an acknowledgment mode bearer (AM EPS bearer) of a certain UE.
  • AM EPS bearer acknowledgment mode bearer
  • the M-RLC determines, according to the configured offloading policy or the currently available radio resource status, that the transmission buffer receives the upper layer data packet, such as the RLC SDU sequence, and sequentially sets the data packet. Two (for example only, the current data traffic of the two transmission links is approximately the same) are sent to the S-RLC and the receiving end M-RLC, respectively.
  • the M-RLC performs size pre-processing on the first two RLC SDUs, such as segmentation and/or cascading processing.
  • the pre-processing function is the same as the prior art, based on a rough estimate made by the M-RLC, or interacting with the S-LC.
  • the S-RLC of the transmitting end After receiving the M-RLC PDU, the S-RLC of the transmitting end resizes the data packet according to the indication of the currently available radio resource by the lower layer (MAC layer). Wherein, the processing may be segmentation, and/or cascading. Correspondingly, the processing of the packet header can be modified or added. After the packet header processing operation, the S-RLC can be delivered to the lower layer data packet (RLC PDU). It should be noted that, as shown in the figure, SN U , SN 12 , SN 21 , and SN 22 are only for clear description. The actual S-RLC recognizes the RLC PDU sent from the M-RLC as RLC SDU processing, modified/added. The format of the PDU header can be the same as in the prior art.
  • the M-RLC pair determines the last two data packets (RLC SDUs) that are directly transmitted to the peer M-RLC, and performs size processing and adding a data packet header according to the prior art (here, it is assumed that two data are obtained after the size processing)
  • HARQ Hybrid Automatic Repeat Request
  • the receiving end M-RLC receives the data packet SN 4 sent by the opposite end M-RLC.
  • the SN 2 and SN 4 data packets are located in the M-RLC's receive buffer (eception buffer).
  • the receiving end M-RLC indicates that the data packet SN 4 has been received, and the SN 1 SN 3 has not been received.
  • the retransmission link can still select the S-LC side; the M-RLC can calculate the number of packet transmission failures that are offloaded to the S-RLC transmission. If the M-RLC considers that the S-RLC bears a high rate of failure of the offloaded data packet transmission, the M-RLC may consider reducing the number of data packets that are offloaded to the S-LC transmission, or canceling the traffic distribution chain. road.
  • the M-RLC of the receiving end After the M-RLC of the receiving end successfully receives all the data packets (SN SN 2 , SN 3 , SN 4 ), it can be delivered to the upper layer (PDCP layer) in order.
  • PDCP layer the upper layer
  • the embodiment of the present invention further describes a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method according to any one of the first aspects of the embodiments of the present invention. Specifically, the method as shown in FIG.
  • the embodiment of the present invention further describes a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method according to any one of the second aspects of the embodiments of the present invention. Specifically, the method as shown in FIG.
  • the above two types of computer storage media may be U disk, optical disk, DVD, magnetic tape or other computer readable storage medium; preferably a non-transitory storage medium.
  • the above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Modifications made in accordance with the principles of the invention are to be understood as falling within the scope of the invention.

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  • Computer Networks & Wireless Communication (AREA)
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  • Communication Control (AREA)

Abstract

L'invention concerne un procédé et système d'émission avec dérivation de paquets de données, ainsi qu'un support de stockage informatique. Le procédé comporte les étapes consistant à: convertir un flux de données SDU de RLC envoyé par une couche PDCP en un premier flux de données PDU de RLC et un deuxième flux de données PDU de RLC par l'intermédiaire d'une couche M-RLC; envoyer le premier flux de données PDU de RLC à une première couche MAC, envoyer le deuxième flux de données PDU de RLC à une couche S-RLC, effectuer un traitement de partitionnement et/ou de cascade sur et ajouter/modifier des en-tête de paquets PDU des diverses PDU de RLC dans le deuxième flux de données PDU de RLC par l'intermédiaire de la couche S-RLC, et les envoyer à une deuxième couche MAC; et envoyer respectivement le premier flux de données PDU de RLC et le deuxième flux de données PDU de RLC à une extrémité de réception au moyen de la première couche MAC et de la deuxième couche MAC. Est également décrit ici un système d'émission avec dérivation de paquets de données. En adoptant la présente invention, les exigences de service de mobilité élevée d'un UE peuvent être prises en considération tout en répondant aux exigences de gros volume de données de l'UE.
PCT/CN2014/077805 2013-10-17 2014-05-19 Procédé et système d'émission avec dérivation de paquets de données, et support de stockage informatique WO2014180373A1 (fr)

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EP14794263.5A EP3059997A4 (fr) 2013-10-17 2014-05-19 Procédé et système d'émission avec dérivation de paquets de données, et support de stockage informatique
JP2016523208A JP6328756B2 (ja) 2013-10-17 2014-05-19 データパケットシャント伝送の方法、システムおよびコンピュータ記憶媒体
US15/029,942 US20160373962A1 (en) 2013-10-17 2014-05-19 Data package shunting transmission method and system, and computer stoarge medium

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CN201310487683.3A CN104581824A (zh) 2013-10-17 2013-10-17 一种数据包分流传输的方法及系统

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JP2017500768A (ja) 2017-01-05
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US20160373962A1 (en) 2016-12-22
JP6328756B2 (ja) 2018-05-23
CN104581824A (zh) 2015-04-29

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